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JPL Small-Body Database Browser
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71997 (2000 WD178)
Classification: Mars-crossing Asteroid          SPK-ID: 2071997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2998116980803993 4.7914e-08  
a 2.292509836566399 8.3284e-09 au
q 1.605188569599408 1.0902e-07 au
i 7.233600672810781 4.105e-06 deg
node 82.57168616302948 4.028e-05 deg
peri 263.9955409143159 4.0591e-05 deg
M 288.5834906329792 7.0729e-06 deg
tp 2459252.013532609337
(2021-Feb-06.51353261)
2.5584e-05 TDB
period 1267.842303437668
3.47
6.9089e-06
1.892e-08
d
yr
n .2839469853812928 1.5473e-09 deg/d
Q 2.979831103533389 1.0825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      8673 days (23.75 yr)  
   first obs. used      1996-07-29  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:48:07  

Additional Information
 Earth MOID = .618898 au 
 Jupiter MOID = 2.48015 au 
 T_jup = 3.526 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO436286  

71997 (2000 WD178)          Discovered 2000-Nov-28 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 WD178 = 1996 OY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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